Peters



Y H. D. B. LEFFERTS; Cloth-Stretching Machine.

N4 PETERS, PHOTO-LITHOGRAPHR, WASHINGTON. [1GV UNITED STATES PATENTOFFICE..

HENRY D. B.` LEFFERTS, OF NEW BRUNSWICK, NEW JERSEY, ASSIGNOR OFONE-HALF OF HIS RIGHT TO EDWIN GULLIOK.

CLOTH-STRETCHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 231,881, dated August31, 1880. Application filed January 10, 1880.

To all whom 'it may concern:

Be it known that I, HENRY D. BLEEFEETS, of New Brunswick, in the countyof MiddleseX, and inthe State of New Jersey, have iu vented certain newand useful Improvements in Cloth-Stretching Machines; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, and to the Ioletters ot' reference marked thereon, making a part of thisspecifica-tion.

The nature of my invention consists in the construction and arrangementot' a machine for stretching cloths and cassimeres after they I5 havebeen printed and shrunkenffor the purpose of bringing them back to theiroriginal length, as will be hereinafter more fully described, and setforth in the claims.

In order to enable others skilled in the art 2o to which myinventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawings, in which-Figure l is a perspective view of my machine. Fig. 2 is a cross-sectionof one of' the rollers. v

A represents the frame ot the machine, the four upright corner-posts ot'which are slotted vertically from their upper ends downward for 3o asuitable distance, as shown ata/fm. The corner-posts at each end ot' themachine are connected by a crossbar, B, and in the bottom of Vthe slotsw are placed the journals ot' a roller, O. Abovd this roller is placedanother roller,

3 5 G', the journals of which also project through the slots m, and havebearings or boxes a placed above them.

D is a tension-bar having its ends placed on top of the boxes a, in theslots x, and a 4o screw, E, screwed through the cross-bar holds saidtensionbar down, so as to create more or less pressure of the roller Con the roller U, as required.

F F are door-rollers, and G a ceiling-roller,

around which the cloth is passed in the manner shown in the drawings.

The rollers C and C are all made alike, each roller being made of awooden cylinder, b, covered with cloth d, and then an additional therollers auniform motion when the machine 6o is in operation.

By the application of the rubber-covered rollers I secure a perfectlyeven tension on the cloth, which tension may be regulated by Lmeansofthe screws E. The lirst or pulling 6.5

roller is lo be screwed down until there is sufficient power, whenturning, to pull the cloth over the cen tral and through the backrollerssay, for example, the front rollers are screwed down to apressure of one hundred pounds, 7o while the back or tension rollers areonly screwed down to fifty pounds. rI he machine is started, and as thecloth is drawn through the back rollers by the revolution of the frontrollers the tension or stretch is perfectly the same on every thread.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

l. In a machine for stretching cloth, a rub- 8o her-covered rollerprovided with spiral grooves and with teeth at its ends, substantiallyas herein set forth.

2. The combination, in a machine for stretch ing cloth, of fourspirally-grooved rubber-covered rollersf-viz., two pulling-rollers infront and two holding or tension rollers back, with devices forregulating the tension-and intermediate top and bottom rollers,substantially as shown and described, and for the purposes 9o set forth.

In testimony that I claim the foregoing I have hereuntoset my hand andseal this 26th day of December, 1879.

HENRY D. B. LEFFERTS. [L. s]

Witnesses:

H. A. BOBINE, R. W. HELM.

